Large-space in-situ monitoring method for rock formation movement in coal mining

Abstract

The invention relates to a monitoring technic of stratum motions before and after the coal bed mining, particularly relates to a 1:1 in-situ monitoring method of the large space range overlying rocks before and after the coal bed mining, and is specifically an in-situ monitoring method of the large space motions of the coal mine mining stratum. The problem that monitoring means for rock strata movements do not yet exist at present for large space ranges either within the nation or outside the nation is solved. The in-situ monitoring method comprehensively adopts a means based on the 'one form three places' method of the subsidence-overburden rock migration-underground mine pressure, and the in-situ monitoring method further adopts the geophysical prospecting methods of well upper and lower linkage observation, the drill hole television observation, the hole gap CT observation and the micro-seismic monitoring and the like, and the in-situ monitoring method also adopts the integration monitoring methods of the working face surrounding rock stress-strain monitoring and the like. The in-situ monitoring method creatively integrates various observation means, and through the reasonable arrangements, designs, observations and analyses of various monitoring means in large space ranges, mutual complements, comparisons and verifications between the various observation means are achieved, meanwhile each separate monitoring technic is innovated and promoted, and the in-situ precise measurement of the large space motions of the coal mine mining stratum is achieved.

Description

technical field [0001] The invention relates to a rock movement monitoring technology before and after coal seam mining, in particular to a 1:1 in-situ monitoring method for a large space range of overlying rock before and after coal seam mining, specifically a large-space in-situ monitoring method for coal mining rock movement. Background technique [0002] The movement characteristics and rules of rock strata after coal mining have always been the core issue of coal mining. Rock strata movement is closely related to disasters such as stope pressure, gas outburst, water seepage, and gob fire. However, because the rock movement is closely related to its geological environment, rock properties, mining conditions and other factors, the complexity and diversity of the rock movement have been created, making the research on the rock movement itself in a "black box" state more complicated. . In recent years, scholars at home and abroad have done a lot of work on the study of roc...

AI Technical Summary

Problems solved by technology

However, at present, there is no monitoring method for the movement of rock formations in a large space at home and abroad.

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